kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 1 | // Copyright 2022 The PDFium Authors |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #ifndef CORE_FXCRT_CFX_READ_ONLY_VECTOR_STREAM_H_ |
| 6 | #define CORE_FXCRT_CFX_READ_ONLY_VECTOR_STREAM_H_ |
| 7 | |
| 8 | #include <stdint.h> |
| 9 | |
| 10 | #include "core/fxcrt/data_vector.h" |
| 11 | #include "core/fxcrt/fixed_uninit_data_vector.h" |
| 12 | #include "core/fxcrt/fx_stream.h" |
| 13 | #include "core/fxcrt/retain_ptr.h" |
| 14 | |
| 15 | class CFX_ReadOnlySpanStream; |
| 16 | |
| 17 | class CFX_ReadOnlyVectorStream final : public IFX_SeekableReadStream { |
| 18 | public: |
| 19 | CONSTRUCT_VIA_MAKE_RETAIN; |
| 20 | |
| 21 | // IFX_SeekableReadStream: |
| 22 | FX_FILESIZE GetSize() override; |
| 23 | bool ReadBlockAtOffset(pdfium::span<uint8_t> buffer, |
| 24 | FX_FILESIZE offset) override; |
| 25 | |
| 26 | private: |
| 27 | explicit CFX_ReadOnlyVectorStream(DataVector<uint8_t> data); |
| 28 | explicit CFX_ReadOnlyVectorStream(FixedUninitDataVector<uint8_t> data); |
| 29 | ~CFX_ReadOnlyVectorStream() override; |
| 30 | |
| 31 | const DataVector<uint8_t> data_; |
| 32 | const FixedUninitDataVector<uint8_t> fixed_data_; |
| 33 | // Spans over either `data_` or `fixed_data_`. |
| 34 | const RetainPtr<CFX_ReadOnlySpanStream> stream_; |
| 35 | }; |
| 36 | |
| 37 | #endif // CORE_FXCRT_CFX_READ_ONLY_VECTOR_STREAM_H_ |